A high-precision alloy valve body integrated casting sand core structure

Abstract

The utility model discloses a high accuracy alloy valve body's integral type casting sand core structure relates to valve body field, including sand shell, sand shell top is provided with broken mechanism, sand shell outside is connected with valve body foundry goods, the broken mechanism is close to the sand shell top and is provided with the big screw rod of rotating being penetrated in the inside of the cover, and the cover is the threaded connection with big screw rod. This high accuracy alloy valve body's integral type casting sand core structure, the cover is covered in sand shell and valve body foundry goods top after valve body foundry, with hard valve body foundry goods as the support, hand presses the cover and rotates the rotating rod, and the rotating rod drives two bevel gears to engage big bevel gear, and then drives small screw rod to rotate in big screw rod, makes the penetration cylinder thread slip, drives the sand cutting block extrusion and inserts sand shell wall surface, then rotates big screw rod, and through the connecting block and the sand cutting block rotation movement, sand shell is broken, and finally knock valve body foundry goods can improve the sand core effect through the vibration mode.

Description

Technical Field

[0001] This utility model relates to the field of valve body technology, specifically to an integrated cast sand core structure for a high-precision alloy valve body. Background Technology

[0002] The valve body is a component that controls the flow of fluid in pipelines or equipment. Internally, flow control is achieved through the valve core. Valve bodies are typically made of alloy materials; alloys are special metals fused together, possessing superior performance. An integrated casting sand core is a sand core form that integrates multiple required sand cores and can be directly used in product casting. The sand core is the internal cavity of the casting; it needs to be removed after the casting is formed.

[0003] The current sand core structure still has some shortcomings, such as making it difficult to quickly clean up sand core fragments.

[0004] To overcome the problem of low efficiency in cleaning sand core fragments, a prior art Chinese patent (publication number: CN215879756U) discloses a sand core for forming the inner cavity of a valve body. This sand core includes a sand core body, a first inner core, a limiting ring, and a second inner core connected to each other via a first connecting rod and a second connecting rod. The sand core body can be fitted onto its outer circumference. When the casting is completed and the sand core body is broken, the fragments fall into the interior of the second inner core through a through groove formed between the first inner core, the second inner core, and the limiting ring, facilitating collection and cleaning. A through-pipe connects to the water inlet, and with a matching interface, water flows from the outlet to the inner wall of the sand core body, facilitating rapid heat conduction and accelerating the casting speed, thus improving casting efficiency. It can collect and clean the fragments caused by breaking the core, facilitating rapid heat conduction and improving casting efficiency.

[0005] However, the current sand core structure still has some shortcomings. The above document states that the efficiency of collecting broken cores can be improved by using a first inner core, a second inner core, and a limiting ring. However, some residues are likely to remain after the sand core is broken, and the cleaning effect may be insufficient. Therefore, the existing structure needs to be improved. Utility Model Content

[0006] The purpose of this invention is to provide an integrated casting sand core structure for a high-precision alloy valve body, so as to solve the problem of inconvenient crushing and unloading of sand cores mentioned in the background art.

[0007] To achieve the above objectives, this utility model provides the following technical solution: an integrated casting sand core structure for a high-precision alloy valve body, including a sand shell, wherein a crushing mechanism is provided on the top of the sand shell.

[0008] A valve body casting is connected to the outside of the sand shell. The crushing mechanism includes a cover that is tightly attached to the top of the sand shell. A large threaded rod is rotatably connected through the inside of the cover, and the cover and the large threaded rod are threaded together.

[0009] Furthermore, a rotating rod is rotatably inserted inside the large threaded rod, and the large threaded rod and the rotating rod rotate through a bearing. The rotating rod consists of a rod and two bevel gears, with the two bevel gears located on the side and bottom of the rod, respectively.

[0010] Furthermore, a large bevel gear is meshed with the side of the rotating rod's bevel gear, and a connecting block is symmetrically fixed to the side of the large threaded rod. A small threaded rod is fixed to the side of the large bevel gear, and the small threaded rod rotates through the connecting block and the large threaded rod via a bearing.

[0011] Furthermore, the surface of the small threaded rod is threaded with a through cylinder, and guide blocks are symmetrically fixed on the side of the through cylinder. The through cylinder and the guide blocks slide through the connecting block, and a sand-cutting block is connected to the end of the through cylinder.

[0012] Furthermore, a fixing block is fixed to the side of the sand cutting block, and an extension rod is fixed to the side of the fixing block away from the sand cutting block. The extension rod slides through the small threaded rod, and a rotating mechanism is provided on the side of the sand cutting block to improve the crushing efficiency of the sand cutting block.

[0013] Furthermore, the rotating mechanism includes extrusion grooves on both sides of the extension rod, an extrusion block is slidably connected through the extrusion groove, the extrusion block is fixed to the inner side of the small threaded rod, and a fixing ring is fixed to the inner side of the through cylinder near the sand cutting block, the fixing ring is rotatably connected to the surface of the fixing block.

[0014] Compared with the prior art, the beneficial effects of this utility model are:

[0015] 1. The high-precision alloy valve body features an integrated cast sand core structure. After the valve body is cast, a cover is placed on top of the sand shell and the valve body casting. With the hard valve body casting as support, the cover is pressed down and the rotating rod is rotated. The rotating rod drives two bevel gears to mesh with the large bevel gear, which in turn drives the small threaded rod to rotate inside the large threaded rod. This causes the thread of the through cylinder to slide, which drives the sand cutting block to squeeze and insert into the wall of the sand shell. Then, the large threaded rod is rotated, and the sand cutting block is moved by the connecting block to break the sand shell. Finally, the valve body casting is struck, and the vibration method can improve the sand core extraction effect.

[0016] 2. It is equipped with a sand cutting block, which can be squeezed into the sand shell. Then, the large threaded rod cuts open the wall of the sand shell through the thread, which can improve the efficiency of crushing and unloading the sand shell.

[0017] 3. It is equipped with a fixing ring and a fixing block. The connection between the fixing ring and the fixing block can move the sand cutting block without affecting its rotation, thus improving the efficiency of the sand cutting block being squeezed into the sand shell.

[0018] 4. It is equipped with heat dissipation holes, which can accelerate the dissipation of heat from the sand cutting block, prevent the sand cutting block from rubbing against the sand shell and causing high temperature and accelerated wear, thereby indirectly improving the service life of the component. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the overall frontal three-dimensional structure of this utility model;

[0020] Figure 2 This is a three-dimensional structural diagram of the large threaded rod of this utility model;

[0021] Figure 3 This is a three-dimensional structural diagram of the connecting block of this utility model;

[0022] Figure 4 This is a schematic diagram of the three-dimensional structure of the sand cutting block of this utility model;

[0023] Figure 5 This is a schematic diagram of the three-dimensional structure of the through-tube of this utility model;

[0024] Figure 6 This is a cross-sectional three-dimensional structural diagram of the extension rod of this utility model.

[0025] In the diagram: 1. Sand shell; 2. Crushing mechanism; 201. Support cover; 202. Large threaded rod; 203. Rotating rod; 204. Large bevel gear; 205. Connecting block; 206. Small threaded rod; 207. Through cylinder; 208. Guide block; 209. Sand cutting block; 301. Fixing block; 302. Extension rod; 303. Extrusion groove; 304. Extrusion block; 305. Fixing ring; 306. Heat dissipation hole. Detailed Implementation

[0026] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0027] Example 1, such as Figures 1-4The present invention provides the following technical solution to address the problem of inconvenient crushing and unloading of sand cores: A crushing mechanism 2 is disclosed, comprising a sand shell 1, with the crushing mechanism 2 mounted on the top of the sand shell 1. A valve body casting is connected to the outside of the sand shell 1. The crushing mechanism 2 includes a cover 201 tightly attached to the top of the sand shell 1. A large threaded rod 202 is rotatably connected through the cover 201, and the cover 201 and the large threaded rod 202 are threaded together. A rotating rod 203 is rotatably connected through the large threaded rod 202, and the large threaded rod 202 and the rotating rod 203 rotate via bearings. The rotating rod 203 consists of a rod and two bevel teeth. The device consists of a wheel assembly with two bevel gears located on the side and bottom of the rod, respectively. A large bevel gear 204 is meshed with the side of the bevel gear of the rotating rod 203. A connecting block 205 is symmetrically fixed to the side of the large threaded rod 202. A small threaded rod 206 is fixed to the side of the large bevel gear 204. The small threaded rod 206 rotates through the connecting block 205 and the large threaded rod 202 via a bearing. A through-tube 207 is threadedly connected to the surface of the small threaded rod 206. A guide block 208 is symmetrically fixed to the side of the through-tube 207. The through-tube 207 and the guide block 208 slide through the connecting block 205. A sand-cutting block 209 is connected to the end of the through-tube 207.

[0028] After the valve body casting is completed, the sand shell 1 needs to be crushed and the material removed. When crushing the sand shell 1, the cover 201 can be placed on top of the sand shell 1 and the valve body casting. After being covered, the hard valve body casting provides the main support. Then, press the cover 201 down and rotate the rotating rod 203. When the rotating rod 203 rotates, both bevel gears can drive the large bevel gear 204 to mesh and rotate. When the large bevel gear 204 meshes and rotates, it can drive the small threaded rod 206 to rotate. When the small threaded rod 206 rotates, it can rotate inside the large threaded rod 202 through the bearing. When the small threaded rod 206 rotates, it can drive the through cylinder 207 to slide threadedly. When the through cylinder 207 slides threadedly, it can drive the guide block 208 to move. When the guide block 208 moves, it can slide inside the connecting block 205. When the through cylinder 207 slides, it can also push the sand cutting block 209 to move. The sand block 209 can be moved to the wall of the sand shell 1 for compression. The sand cutting block 209 can be inserted into the sand shell 1 through compression. When the sand cutting block 209 moves to a certain position, the large threaded rod 202 is rotated. When the large threaded rod 202 rotates, it can slide threadedly on the inner side of the cover 201. When the large threaded rod 202 slides threadedly, it can drive the sand cutting block 209 to rotate and move through the connecting block 205. When the sand cutting block 209 rotates and moves, it can split the overall structure of the sand shell 1. When the sand cutting block 209 moves to the bottom of the cover 201, the overall structure of the sand shell 1 can be completely broken. The cover 201 is removed from the inside of the sand shell 1 and the valve body casting is knocked. The valve body casting will vibrate after being knocked. The vibration can break the structurally damaged sand shell 1, which can prevent the sand shell 1 from remaining inside the valve body casting and improve the effect of sand core extraction.

[0029] Example 2, as follows Figure 5 and Figure 6 The present invention provides the following technical solution: In order to solve the problem that the sand shell 1 has high hardness and the sand cutting block 209 is difficult to break, a rotating mechanism is disclosed based on the first embodiment. A fixing block 301 is fixed on the side of the sand cutting block 209, and an extension rod 302 is fixed on the side of the fixing block 301 away from the sand cutting block 209. The extension rod 302 slides through the small threaded rod 206. A rotating mechanism to improve the crushing efficiency of the sand cutting block 209 is provided on the side of the sand cutting block 209. The rotating mechanism includes extrusion grooves 303 on both sides of the extension rod 302. An extrusion block 304 is slidably connected through the extrusion grooves 303. The extrusion block 304 is fixed on the inner side of the small threaded rod 206, and a fixing ring 305 is fixed on the inner side of the through cylinder 207 near the sand cutting block 209. The fixing ring 305 is rotatably connected to the surface of the fixing block 301.

[0030] Before the valve body casting crushes the sand shell 1, the rotating rod 203 rotates, causing the sand-cutting block 209 to be squeezed into the sand shell 1. When the rotating rod 203 rotates, it can drive the small threaded rod 206 to rotate through the large bevel gear 204. When the small threaded rod 206 rotates, it can drive the internal extrusion block 304 to rotate. When the extrusion block 304 rotates, it can extrude the wall of the extrusion groove 303. When the extrusion groove 303 is extruded, it can drive the extension rod 302 to rotate. When the extension rod 302 rotates, it can drive the sand-cutting block 209 to rotate through the fixing block 301. During the rotation of the sand-cutting block 209, it is pushed by the threaded connection between the through cylinder 207 and the small threaded rod 206. When the through cylinder 207 is pushed, it can drive the inner fixing ring 305 to move. When the fixed ring 305 moves, it can squeeze the fixed block 301. When the fixed block 301 is squeezed, it can drive the extension rod 302 to move. The extension rod 302 can slide inside the squeezing block 304 through the squeezing groove 303. The sliding of the squeezing groove 303 can realize the movement of the sand cutting block 209. The squeezing of the squeezing groove 303 and the squeezing block 304 can realize the rotation of the sand cutting block 209. Therefore, the sand cutting block 209 can be inserted into the sand shell 1 in a rotating manner, preventing the sand shell 1 from being too hard and causing obstruction to the sand cutting block 209. This improves the efficiency of the use of the sand cutting block 209 and the crushing mechanism 2. When the sand cutting block 209 rotates and is squeezed, it may generate heat. The heat can be discharged from the heat dissipation hole 306 to prevent the sand cutting block 209 from overheating.

[0031] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A high-precision alloy valve body integral casting sand core structure, comprising a sand shell (1), wherein a crushing mechanism (2) is provided on the top of the sand shell (1), characterized in that: The outer side of the sand shell (1) is connected to a valve body casting. The crushing mechanism (2) includes a cover (201) that is tightly attached to the top of the sand shell (1). A large threaded rod (202) is rotatably connected through the inside of the cover (201), and the cover (201) and the large threaded rod (202) are threadedly connected.

2. The integrated cast sand core structure for a high-precision alloy valve body according to claim 1, characterized in that: The large threaded rod (202) has a rotating rod (203) running through it. The large threaded rod (202) and the rotating rod (203) rotate through a bearing. The rotating rod (203) consists of a rod and two bevel gears, which are located on the side and bottom of the rod, respectively.

3. The integrated cast sand core structure for a high-precision alloy valve body according to claim 2, characterized in that: The rotating rod (203) has a bevel gear (204) meshing with the side of the bevel gear, and a connecting block (205) is symmetrically fixed on the side of the large threaded rod (202). A small threaded rod (206) is fixed on the side of the large bevel gear (204), and the small threaded rod (206) rotates through the connecting block (205) and the large threaded rod (202) via a bearing.

4. The integrated cast sand core structure for a high-precision alloy valve body according to claim 3, characterized in that: The small threaded rod (206) is threadedly connected to a through cylinder (207). A guide block (208) is symmetrically fixed on the side of the through cylinder (207). The through cylinder (207) and the guide block (208) slide through the connecting block (205). A sand-cutting block (209) is connected to the end of the through cylinder (207).

5. The integrated cast sand core structure for a high-precision alloy valve body according to claim 4, characterized in that: A fixing block (301) is fixed to the side of the sand cutting block (209), and an extension rod (302) is fixed to the side of the fixing block (301) away from the sand cutting block (209). The extension rod (302) slides through the small threaded rod (206). A rotating mechanism to improve the crushing efficiency of the sand cutting block (209) is provided on the side of the sand cutting block (209).

6. The integrated cast sand core structure for a high-precision alloy valve body according to claim 5, characterized in that: The rotating mechanism includes extrusion grooves (303) on both sides of the extension rod (302), and an extrusion block (304) is slidably connected through the extrusion groove (303). The extrusion block (304) is fixed to the inner side of the small threaded rod (206), and a fixing ring (305) is fixed to the inner side of the through cylinder (207) near the sand cutting block (209). The fixing ring (305) is rotatably connected to the surface of the fixing block (301).

Images